Grey-flanked Cinclodes
Cinclodes oustaleti
The grey-flanked cinclodes is 17 to 18 cm (6.7 to 7.1 in) long and weighs 22 to 31 g (0.78 to 1.1 oz). It is a small cinclodes with a medium-length slightly decurved bill. The sexes have the same plumage. Adults of the nominate subspecies have a buff supercilium with speckles at its front, blackish brown lores and ear coverts, and a whitish malar area with dark scallops. Their crown is dark grayish brown and their upperparts rich dark brown. Voice: The grey-flanked cinclodes' song is "a fast dry twittery trill rising in pitch, introduced by a few single notes", and its call is "a dry 'tsick' ".
ID text from Wikipedia, CC BY-SA 4.0
Stout-billed Cinclodes
Cinclodes excelsior
The stout-billed cinclodes is 20 to 21 cm (7.9 to 8.3 in) long and weighs 62 to 66 g (2.2 to 2.3 oz). It is a large cinclodes with a decurved, thick-based, bill. The sexes have the same plumage. Adults of the nominate subspecies have a long white supercilium that extends to the hindneck, a whitish malar area with dark scallops, and an otherwise dark brown face with some narrow pale streaks. Their crown is very dark brown and their upperparts dark brown. Their wings are also dark brown, with blackish brown primary coverts and some rufous across the base of the flight feathers. Voice: The stout-billed cinclodes' song is "a rising and swelling trill, 'tr-r-r-r-r-r-r-reet' ". Its calls include "a nasal 'kiu' or 'druut' or 'ken-eek' low twittering notes in flight".
ID text from Wikipedia, CC BY-SA 4.0

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Play today's Daily BirdPhotos and recordings are credited to their authors under the licence shown. Full profiles: Grey-flanked Cinclodes and Stout-billed Cinclodes.